On the night of December 13, 1941, Latvian policemen arrested the Jews of Liepaja and took them to jail. Those with work permits, along with their families, were released.
The remaining Jews were taken to Skede, north of Liepaja, to the dunes overlooking the Baltic Sea, the site of a former military training [ground]. A long ditch had been dug just before the dunes. The Jews were forced to strip off their clothes except for their underwear. Near the ditch they then were made to take off their remaining clothes and assemble in groups of ten. They were executed by members of a Latvian SD guard platoon, units of the 21st Latvian police battalion, and members of the Schutzpolizei-Dienstabteilung (German security police) under the command of the local SS and Police Leader Fritz Dietrich. On the 15-17 of December, 2,700-2,800 Jews were massacred, most of them women and children.His source is an article on the site of the US Holocaust Memorial Museum: This Month in Holocaust History, December 6.
Fat Man on a Keyboard (Peter Ryley) has also pointed to an excellent resource for those who wish to criticize Israel without being antisemitic, on a Tumblr blog called "This is not Jewish." His post is also very good, discussing the vexed question of "Why does the Israel/Palestine conflict send everybody gaga?"